2-Bromo-5-cyanopyridine Chemical Properties

Melting point:

136-140

Boiling point:

261.6±20.0 °C(Predicted)

Density 

1.72±0.1 g/cm3(Predicted)

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

form 

Solid

pka

-2.66±0.10(Predicted)

color 

White to Yellow to Orange

CAS DataBase Reference

139585-70-9(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi,Xn

Risk Statements 

36/37/38-41-37/38-22

Safety Statements 

26-36/37/39-39-24/25

RIDADR 

3439

WGK Germany 

3

Hazard Note 

Irritant/Keep Cold

HazardClass 

IRRITANT

HazardClass 

6.1

PackingGroup 

Ⅲ

HS Code 

29333990

2-Bromo-5-cyanopyridine Usage And Synthesis

Chemical Properties

White to yellow crystalline solid

Uses

6-Bromonicotinonitrile is a biochemical reagent that can be used as a biological material or organic compound for life science related research.

Synthesis Reference(s)

The Journal of Organic Chemistry, 66, p. 1500, 2001 DOI: 10.1021/jo005682n

Synthesis

The general procedure for the synthesis of 2-bromo-5-cyanopyridine from 2-chloro-5-cyanopyridine is as follows: Example 29 Synthesis of 6-bromonicotinonitrile. 6-Chloronicotinonitrile (13.8 g, 100 mmol) was mixed with phosphorus tribromide (150 mL) and the reaction was heated at 145°C for 32 hours. After completion of the reaction, the mixture was cooled and concentrated in vacuum. To the concentrated residue, phosphorus tribromide (150 mL) was added again and the reaction was heated at 145°C for 32 hours. At the end of the reaction, the mixture was cooled and concentrated under vacuum. The concentrated residue was slowly added to an ice-water mixture (500 mL) and the reaction mixture was neutralized with sodium bicarbonate. Subsequently, the product was extracted with ethyl acetate (3 x 250 mL). The organic phases were combined, washed with saturated brine and dried with anhydrous magnesium sulfate. The solvent was removed by distillation under reduced pressure and the residue was purified by column chromatography (eluent: hexane-ethyl acetate) to afford 14.9 g (81% yield) of 6-bromonicotinonitrile as a white solid. The product was characterized as follows: 1H NMR (400 MHz, CDCl3) δ 7.66 (d, J = 11.0 Hz, 1H), 7.80 (dd, J = 3.1, 11.0 Hz, 1H), 8.67 (d, J = 3.1 Hz, 1H); mass spectra (M + H)+ m/z = 183.0, 185.0.

References

[1] Patent: US2005/192302, 2005, A1. Location in patent: Page/Page column 30
[2] Patent: WO2012/114223, 2012, A1. Location in patent: Page/Page column 56
[3] Journal of Organic Chemistry, 2001, vol. 66, # 4, p. 1500 - 1502

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